package com.zfj.HashSet;

import java.util.Objects;

/**
 * @author zfj
 * @date 2022/3/7 -14:54
 */
public class Person implements Comparable<Person> {
	private String name;
	private int age;

	public Person(String name, int age) {
		this.name = name;
		this.age = age;
	}

	public Person() {
	}

	public String getName() {
		return name;
	}

	public void setName(String name) {
		this.name = name;
	}

	public int getAge() {
		return age;
	}

	public void setAge(int age) {
		this.age = age;
	}

	@Override
	public String toString() {
		return "Person{" +
				"name='" + name + '\'' +
				", age=" + age +
				'}';
	}

	@Override
	public int hashCode() {
		int n1=this.age;
		int n2=this.name.hashCode();
		return n1+n2;
	}

	/**
	 * Compares this object with the specified object for order.  Returns a
	 * negative integer, zero, or a positive integer as this object is less
	 * than, equal to, or greater than the specified object.
	 *
	 * <p>The implementor must ensure <tt>sgn(x.compareTo(y)) ==
	 * -sgn(y.compareTo(x))</tt> for all <tt>x</tt> and <tt>y</tt>.  (This
	 * implies that <tt>x.compareTo(y)</tt> must throw an exception iff
	 * <tt>y.compareTo(x)</tt> throws an exception.)
	 *
	 * <p>The implementor must also ensure that the relation is transitive:
	 * <tt>(x.compareTo(y)&gt;0 &amp;&amp; y.compareTo(z)&gt;0)</tt> implies
	 * <tt>x.compareTo(z)&gt;0</tt>.
	 *
	 * <p>Finally, the implementor must ensure that <tt>x.compareTo(y)==0</tt>
	 * implies that <tt>sgn(x.compareTo(z)) == sgn(y.compareTo(z))</tt>, for
	 * all <tt>z</tt>.
	 *
	 * <p>It is strongly recommended, but <i>not</i> strictly required that
	 * <tt>(x.compareTo(y)==0) == (x.equals(y))</tt>.  Generally speaking, any
	 * class that implements the <tt>Comparable</tt> interface and violates
	 * this condition should clearly indicate this fact.  The recommended
	 * language is "Note: this class has a natural ordering that is
	 * inconsistent with equals."
	 *
	 * <p>In the foregoing description, the notation
	 * <tt>sgn(</tt><i>expression</i><tt>)</tt> designates the mathematical
	 * <i>signum</i> function, which is defined to return one of <tt>-1</tt>,
	 * <tt>0</tt>, or <tt>1</tt> according to whether the value of
	 * <i>expression</i> is negative, zero or positive.
	 *
	 * @param o the object to be compared.
	 * @return a negative integer, zero, or a positive integer as this object
	 * is less than, equal to, or greater than the specified object.
	 * @throws NullPointerException if the specified object is null
	 * @throws ClassCastException   if the specified object's type prevents it
	 *                              from being compared to this object.
	 */
	@Override
	public int compareTo(Person o) {
		int n1=this.getName().compareTo(o.getName());
		int n2=this.age-o.getAge();
		return n1==0?n2:n1;
	}
}
